[PATCH v5 08/11] remoteproc: stm32: Split function stm32_rproc_parse_fw()

From: Mathieu Poirier
Date: Tue Jul 07 2020 - 17:31:29 EST


Split function stm32_rproc_parse_fw() in two parts, the first one
to parse the memory regions and the second one to load the
resource table. That way parsing of the memory regions can be
re-used when attaching to the remote processor.

Mainly based on the work published by Arnaud Pouliquen [1].

[1]. https://patchwork.kernel.org/project/linux-remoteproc/list/?series=239877

Signed-off-by: Mathieu Poirier <mathieu.poirier@xxxxxxxxxx>
---
drivers/remoteproc/stm32_rproc.c | 23 ++++++++++++++++++++---
1 file changed, 20 insertions(+), 3 deletions(-)

diff --git a/drivers/remoteproc/stm32_rproc.c b/drivers/remoteproc/stm32_rproc.c
index cbeb5ceb15c5..9ab58fae252f 100644
--- a/drivers/remoteproc/stm32_rproc.c
+++ b/drivers/remoteproc/stm32_rproc.c
@@ -213,7 +213,7 @@ static int stm32_rproc_elf_load_rsc_table(struct rproc *rproc,
return 0;
}

-static int stm32_rproc_parse_fw(struct rproc *rproc, const struct firmware *fw)
+static int stm32_rproc_parse_memory_regions(struct rproc *rproc)
{
struct device *dev = rproc->dev.parent;
struct device_node *np = dev->of_node;
@@ -266,6 +266,16 @@ static int stm32_rproc_parse_fw(struct rproc *rproc, const struct firmware *fw)
index++;
}

+ return 0;
+}
+
+static int stm32_rproc_parse_fw(struct rproc *rproc, const struct firmware *fw)
+{
+ int ret = stm32_rproc_parse_memory_regions(rproc);
+
+ if (ret)
+ return ret;
+
return stm32_rproc_elf_load_rsc_table(rproc, fw);
}

@@ -693,15 +703,20 @@ static int stm32_rproc_probe(struct platform_device *pdev)
if (ret)
goto free_rproc;

- if (state == M4_STATE_CRUN)
+ if (state == M4_STATE_CRUN) {
rproc->state = RPROC_DETACHED;

+ ret = stm32_rproc_parse_memory_regions(rproc);
+ if (ret)
+ goto free_resources;
+ }
+
rproc->has_iommu = false;
ddata->workqueue = create_workqueue(dev_name(dev));
if (!ddata->workqueue) {
dev_err(dev, "cannot create workqueue\n");
ret = -ENOMEM;
- goto free_rproc;
+ goto free_resources;
}

platform_set_drvdata(pdev, rproc);
@@ -720,6 +735,8 @@ static int stm32_rproc_probe(struct platform_device *pdev)
stm32_rproc_free_mbox(rproc);
free_wkq:
destroy_workqueue(ddata->workqueue);
+free_resources:
+ rproc_resource_cleanup(rproc);
free_rproc:
if (device_may_wakeup(dev)) {
dev_pm_clear_wake_irq(dev);
--
2.25.1